Fixed a problem where you lose the exception type on rethrow.
Fixed a problem where you lose the exception type on rethrow.

steinwurf/yaml-cpp,steinwurf/yaml-cpp,eacousineau/yaml_cpp_0_2_7,bassosimone/yaml-cpp,bassosimone/yaml-cpp,steinwurf/yaml-cpp,steinwurf/yaml-cpp,bassosimone/yaml-cpp,eacousineau/yaml_cpp_0_2_7,bassosimone/yaml-cpp